Beam-strut.



.PATENTED NOV. 21, 1905.

N. H. DAVIS.

BEAM STRUT.

APPLICATION IILED APB..14, 1905.

W O-Q ZMA, I TTORNEY.

WITNESSES.

UNITED STATES PATENT OFFICE.

BEAM-STRUT.

Specification of Letters Patent;

Patented Nov. 21, 1905.

Application filed April 14, 1905. Serial No. 255,530.

To all whmn it may concern;

Be it known that I, NATHAN H. DAvIs, a citizen of the United States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Beam- Struts, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to a construction of a strut or post for truss-beams, especially such as are known as brake-beams, the object of my invention being to provide a strut especially well adapted for its purposes in use and for being secured conveniently and firmly in its position in the beam.

The nature of my improvements will be best understood as described in connectionwith the drawings, in which they are illustrated, and in which Figure 1 is an elevation of a truss-beam embodying my improved beam-strut. Fig. 2 is aperspective view of the two parts making up the beam-strut shown in assembled position. Fig. 3 is perspective view of the main strut member, and Fig. 4 a perspective view of the separable head-section of the strut.

A indicates the compression member of the beam, which is here indicated as made up of a web A with flanges, such as are indicated at A A is the tension member of the beam, and C'is the strut or post of the beam, which according to my construction is made up of the main straight member D and the supplemental head-section E. The sectionD is provided with a lateral opening or socket D, which rests-on the tension member, and at its other end is formed with a hook-like head (indicated at D and adapted to fit over the flange on one side of the compression member A. Just inside of the head D the main strut member is cutaway, forming the shoulder D and flat surface D. As shown, a transverse groove D is formed immediately adjaat D, for the entry of the brake-lever, a pinhole D being provided for a pin used in holding the brake-lever in position.

The head-section E of the strut is formed with a hooked end E adapted to engage the flange of the compression member on the opposite side to that engaged by the head D and with an elongated shank which is made to fit into the cut-away portion of the main strutsection, its end E" abutting against the shoulder D ribs E, fitting into the grooves Di grooves E fitting over the rib D a longitudinal angular slot E fitting over the angular longitudinal arm D, while a flat surface E is provided to fiton the surface D and a rivet-hole E at the head of the. shank is formed to register with a rivet-hole D In practice thesocket D is fitted over the tension member A and the hooked head D forced over the flange A of the compression member of the truss. The separable headsection E is then put in place on the opposite side of the compression member and against the recess formed on the end of the main strut member, the grooves and ribs of the member E being complementary to those of the main strut member, so that the two fit together and are finally secured together, as well as to the compression member of the truss, by a rivet passing through the holes D E the interengaged ribs and grooves securely looking the two sections of the strut'together, preventing any relative longitudinal or lateral movement of the central section E with respect to the main section.

By forming the separable head with the elongated shank and securing it to the main section by means clamping them together near the compression member a firm union is secured, the tail of the shank acting on the rivet or other securing device preventing any rocking action.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A truss-beam strut or post made up of a main section formed to extend between the tension and compression members of the truss and to fit against and conform to one side of the compression member, a separate headsection formed to fit against the other side of the compression member and having an elongated shank adapted to lie in contact with the adjacent side of the main strut-section, and means for securing the head-section to the main section situated at the head of the elongated shank and close to the compression member of the beam.

2. A truss-beam strut or post having a head formed to fit one side of the compression member of the beam and its body adjacent to said head out down and formed with longitudinal and transverse ribs, a separable head-section formed to fit on the other side of the compression member and formed with complementary longitudinal and transverse grooves to fit in the cut-down body portion of the main strut member, and means for securing the head-section to the main strut.

3. A truss-beam strut or post havinga head formed to fit one side of the compression member of the beam and its body adjacent to said head out down to form the shoulder D and face D and provided With the angular buttress-rib D, springing from the shoulder and merging in the face D a transverse rib and a rivet hole in face D and a separable head-section formed to fit on the other side of the compression member and With complementary longitudinal and transverse grooves and a rivet-hole to fit in the cut-down section of the main strut.

NATHAN H. DAVIS.

Witnesses ARNOLD KATZ, D. STEWART. 

